---
title: "ListColumnCollection Class"
canonical: https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ListColumnCollection.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# ListColumnCollection Class
 
This class represents a storage for [ListColumn](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ListColumn.htm.md) objects of the [ThumbnailListView](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ThumbnailListView.htm.md) control.
 
**Namespace:** [Aurigma.GraphicsMill.WinControls](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)
 **Assembly:** Aurigma.GraphicsMill.WinControls (in Aurigma.GraphicsMill.WinControls.dll)
 
## Syntax
  
```
<DefaultMemberAttribute("Item")> _
Public Class ListColumnCollection _Inherits CollectionBase _Implements IList, ICollection, IEnumerable
```
 
```csharp
[DefaultMemberAttribute("Item")]
public class ListColumnCollection : CollectionBase, IList, ICollection, IEnumerable
```
 
## Remarks
  
When you display items in the [Details](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_View.htm.md) view mode, each item is displayed as a row in a table. Each column display a piece of information about the item. For example, if you display a file list, you can use three columns: name, type, and size.
 
If you are going to use the [Details](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_View.htm.md) view, you should should create required number of [ListColumn](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ListColumn.htm.md) class instances and add them with the [Add(ListColumn)](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_WinControls_ListColumnCollection_Add_1_2a29ac70.htm.md) method. Later you can remove them with the [Remove(ListColumn)](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_WinControls_ListColumnCollection_Remove_1_2a29ac70.htm.md) method, or insert the column to certain position (see the [Insert(Int32, ListColumn)](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_WinControls_ListColumnCollection_Insert_2_0c376edb.htm.md) method). If you need to re-initialize columns, you can remove all of them with the [Clear()](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_WinControls_ListColumnCollection_Clear.htm.md) method and add them once again.
 
## Inheritance Hierarchy
  
- [System.Object](http://msdn2.microsoft.com/en-us/e5kfa45b)
    - [System.Collections.CollectionBase](http://msdn2.microsoft.com/en-us/7a03ybbb)
        - Aurigma.GraphicsMill.WinControls.ListColumnCollection
 
## Thread Safety
 Static members of this type are safe for multi-threaded operations. Instance members of this type are not safe for multi-threaded operations.
 
## Object Model

[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill.WinControls_ObjectModel_87.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ListColumnCollection.htm.md)
![](https://www.graphicsmill.com/docs/gm5/ObjectModel2.png)[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill.WinControls_ObjectModel_88.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ListColumn.htm.md)
![](https://www.graphicsmill.com/docs/gm5/ObjectModel1.png)[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill.WinControls_ObjectModel_89.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ListColumn.htm.md)
  
## See Also

### Reference

- [ListColumnCollection Members](https://www.graphicsmill.com/docs/gm5/AllMembers_T_Aurigma_GraphicsMill_WinControls_ListColumnCollection.htm.md)
- [Aurigma.GraphicsMill.WinControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)